上海交通大学学报

上海交通大学学报

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Fe-Mn合金及其螺旋弹簧的阻尼特性

  

  1. 1. 中国机械科学研究总院，北京100044；

    2. 上海材料研究所有限公司 上海市工程材料应用与评价重点实验室，上海200437

  • 通讯作者: 杨旗，正高级工程师，博士生副导师；E-mail：m1866733474@163.com
  • 作者简介:涂田刚（1989—），博士生，从事阻尼材料及其应用技术研究。
  • 基金资助:
    上海市中央引导地方科技发展资金（三期）（YDZX20233100002004）资助项目

Damping Characteristics of Fe-Mn Alloy and Its Helical Spring

  1. 1. China Academy of Machinery Science and Technology, Beijing 110000, China；

    2. Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Research Institute of Materials Co., Ltd., Shanghai 200437, China

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摘要： 为了改变传统螺旋弹簧的无阻尼现状，采用Fe-Mn合金研制了一种具有良好阻尼特性的螺旋弹簧。首先，研究了用于制作螺旋弹簧的Fe-Mn合金材料的最佳工艺参数。然后，制备了Fe-Mn合金螺旋弹簧，并采用优化的工艺参数对其进行处理，以实现高阻尼特性。最后，通过螺旋弹簧的功能原理和解析模型，进一步研究了Fe-Mn合金螺旋弹簧的阻尼性能。结果表明，在相同的外部激励条件下，与65Mn螺旋弹簧相比，Fe-Mn合金螺旋弹簧表现出显著的耗能效果。在一定的加载位移下，Fe-Mn合金螺旋弹簧的损耗因子随位移的增加呈非线性指数增长，而其等效刚度随位移的增加呈线性下降，表现出明显的软化特性。特别地，当Fe-Mn合金螺旋弹簧的等效应变幅小于0.3%时，可以利用其扭转应变能预测其耗能特性，为弹簧设计提供理论依据。该研究为减隔振产品的开发和应用提供了新的方向。

关键词: Fe-Mn合金, 阻尼性能, Fe-Mn合金螺旋弹簧, 耗能特性

Abstract: In order to change the undamped state of traditional helical spring, a helical spring with improved damping characteristics is developed by using Fe-Mn alloy. Firstly, the optimum process parameters of Fe-Mn alloy material for making helical spring is studied. Then, the Fe-Mn alloy helical spring is prepared and processed with optimized parameters to achieve high damping properties. Finally, the damping properties of Fe-Mn alloy helical spring is studied through the functional principle and analytical model of the helical spring. The results show that the Fe-Mn alloy helical spring exhibits a significant energy dissipation effect compared with the 65Mn helical spring under the same external excitation conditions. At a certain loading displacement, the loss factor of Fe-Mn alloy helical spring increases exponentially with the increase of displacement, while its equivalent stiffness decreases linearly, exhibiting pronounced softening characteristics. Specifically, when the equivalent strain amplitude of Fe-Mn alloy helical spring is less than 0.3%, its energy dissipation can be predicted using its torsional strain energy, providing a theoretical basis for spring design. This study provides a new direction for the development and application of vibration isolation products.

Key words: Fe-Mn alloy, Damping property, Fe-Mn alloy helical spring, Energy dissipation characteristics

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